Thanks Blooie.
She is fine with the other hen she was raised with, but certainly is giving me a run for my money with these chicks. I could probably easily rehome her with a friend of mine who has a much larger flock and roosters and thus, she'd have to get in line. I really would prefer not to, though, as we need the eggs! With such a small flock numbers count so much, and we've got months before we're getting eggs from the babies.
If anyone else has suggestions, please let me know.
If not, I'm going to try isolating her in the coop. How do you deal with nest box access in that situation? Would I need to give her a nest box inside the crate? Or could I just put her in the henhouse for a few hours? That part of it is giving me a headache.
Perhaps you could trade your friend, one of his/her birds for one of yours. Be aware that if your 2 older birds are over a year old, they may not lay much this winter unless you force them with light. Some say 12 hours minimum per day, some say 14.